Chimney cowl or ventilator



(No Model.)

W. G. HENIS. CHIMNEY GOWL 0R VENTILATOR.

No. 429,911. I Patented June 10, 1890.

WITNESSES: INVENTOR wgyflowa UNITED STATES PATENT OFFICE.

WILLIAM G. HENIS, OE PHILADELPHIA, PENNSYLVANIA.

CHIMNEY COWL OR VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 429,911, dated June 10, 1890.

Application filed July 2, 1888. Serial No. 278,796. (No model.)

To all whom it ntaty concern-- Be it known that I, WILLIAM G. HENIS, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Chimney Oowls or Ventilators, of which the following is a specification.

My invention relates to the construction of a chimney cowl or ventilator.

Referring to the accompanying drawings, Figure 1 is a front view of my cowl. Fig. 2 is a vertical section of the same.

A is the supporting-tube, to be attached to a chimney. B B are lugs thereon, to which is attached the saddle C, from which the post D enters the tube E, upon the extended top of which the cowl F proper is supported. These parts are fully shown and described in Letters Patent therefor issued to me December 15, 1885, No. 332,523.

My cowl consists of a bottomless head G, which rests upon the top F of the tube E. This hood partly surrounds the tube A, but has no collar or band inclosing it, being at this part freely open to the air, the currents thereby produced increasing the draft, the cost of construction being thereby reduced both in material and labor, and the weight being diminished. The back end of the hood is cut off square, and in the opening so formed is inserted a tube G in form of the frustum of a cone, the section of which is entirely closed at the bottom, while it is left partly open elsewhere by the deflecting-plate H. As a result of this form of tube and of the plate, the wind, striking the back of the cowl, is forced in a thin broad current toward the outside of the space within the head, but mostly toward the top and forward, propelling the smoke from the chimney in the course it is most easily induced to take.

I am aware that the hood of a chimney-cowl has been constructed in the general form of a frustum of a cone, more or less distorted from a cylindrical form at its base, and having insert-ed at its side a tube which formed a collar surrounding the supporting-tube, and that the head of such cowl has been con structed without a collar of a round piece of metal having a V-shaped piece cut therefrom,

which forms an inclined conical canopy partly intercepting the wind from the front, but leaving the supporting-tube exposed on both sides and at the back, and I do not claim such hood in either of these forms, the form of my hood being such that the supporting-tube is protected from the wind on the front and on both sides, and is uncovered at the back so that the wind is there admitted to assist the draft of the chimney.

I am also aware that a hood has been constructed having inserted at its front end a tube in form a truncated cone, and having a deflecting -plate, which extends across the smoke-pipe, and I do not claim a hood so constructed.

I claim as my invention 1. In a chimney cowl or ventilator, in combination with a supporting-tube and a p'ivotal support, a hood inclosin g the supportingtube on the front and at the sides and open below at the back, and of the general form substantially as shown and described.

2. In a chimney cowl or ventilator, in combination with a supporting-tube and a pivotal support, a hood in general form a cone from which a section is cut off by a plane proximately parallel to its axis, the line of section inclosing the supporting-tube on the front and at the sides, substantially as shown and described.

3. In a chimney cowl or ventilator, in combination with a supporting-tube and a pivotal support, a hood having inserted at its front end a tube whose inner end is partly closed by a deflecting-plate, which is entirely in advance of the smoke-pipe, so as not to obstruct the outlet thereof.

41. In a chimney cowl or ventilator, in combination with a supporting-tube, a pivotal support and a hood thereon, a tube inserted in the front end of said hood in form a conical ungula having its longest side upmost, and a deflecting-plate partly closing the inner end of said tube and inclined backward from the line of section of the cone.

\VILLIA'M G. HENIS.

Witnesses:

SAML. F. GILLIER, GEORGE HOUSE. 

